I'm brand new to this. I've built a forge using a 24" tub, adobe, and a 1" pipe with 14 - 1/4" holes in it for forced air. I've powered air with a hair dryer, and use charcoal for fuel. I can get a railroad spike hot enought to loose magnetism and glow a light red. To me, it doesn't seem quite hot enough to be very maleable under my hammer. Q: Do I need more forced air to get the forge hotter? That's my best guess. Any suggestions?